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Appendix VL


Pp. 431 and 848.   Measuring Areas.—The Amsler Plani
meter is now well known as a most useful instrument for the
mechanical integration of areas, and is shewn in Fig. 958.    A



bar B is pivoted at one end on a stud F that is held to the paper
by a pin, and a weight c laid upon the bar prevents lifting. A
second bar A is hinged to B at G, and is supported by the wheel K